Type-writing machine.



0. BENNETT.

TYPE WRITING MACHINE.

APPLICATION FTLED MAR 26, 1914- 1,1 1 5 2% Patented 001;. 27, 191% 2 SHEETS-SHEET l, f'cr5 5 1 I6 [[164 m V I INVENTOR W11 M5553.- Z ggy/27262 2 By 7 Q O. BEENETT.

TYPE WRITING MACHINE.

APPLICATION FILED MAR. 26, 1914.

2 SHEETSSEEET 2.

WITNESSES: IN VENTOR.

yQiwm 7i? firm; @TYW/ MW Patented Get. 27, 1914.

* nnrrnn snares ra'ranr carton.

GRIN BENNETT, 0E PLACERVILLE,- CALIFORNIA.

TYPE-WRITING MAGHINE.

To all whom it may concern: Be it known that 1, Ohm BENNETT, a citizen ofthe United States, residing Placerville, in the county of Eldorado and State of California, have invented certain new and useful Improvements in Type-Writing Machines; and I do declare the following to be a clear,- full, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters ofreference marked thereon,- which form a part ofthis application.

This invention relates to improvements in typewriting machines of the type commonly used for manually performing typewriting,

the object of the invention being to produce a mechanism whereby the impression of the type or rather the type movement will be operated by i an independent mechanical means rather than by the direct power of the operator, which mechanical operating means will be-released for operation by the movement of the keys of the typewriter and which after such release will thereafter automatically perform the operation of striking the type keys against the paper or other material to make the impression of the type thereon. This key operating mechanism will be capable of operating with a very slight touch from the operator so that no physical power will be necessar to operate the type bars. By me i ns of this structure, the impression made by the type will always bexsubstantially the. same; the alinement can be kept absolutely perfect and also a great many manifold copies can be made more easily and el'liciently than where thefimpression istaken solely by means of the physical strength of the operator.

A further object of the invention is to produce an electrically controlledmeans for operating the entire structure immediately upon the operating keys being touched by' the operator, thebalance of the operatlon being then carried on by magnetic attraction. This latter feature however may ormay not be used as the mechanism can be operated with or without the same :u may be.

found desirable. l r j A further object ofjthe invention is to produce a simple and tinekpensivedevice andyet one which willvbe exceedingly effective fort-he purpdses for which it is designed.

These objects, I accomplish bymeans of Specification of Letters Patent.

in order ture.

of the following specification and claims.

On the, drawings, similar characters of reference indicate corresponding parts in the several views.

Figure 1 is a top plan view of one operating key and of the mechanical impression mechanism connected therewith which illus trates the operation of all the keys, hencel have not confused the matter by showing all the keys, each of .which would merely be a duplicate of the other. Fig. 2 is a side elevation, partly in section, of the subject matter' shown in- Fig. 1, showing the entire mechanism in inactive position. Fig. 3 is'a side elevation of the mechanical impression-- mechanism showing it in the same position shown in Fig. 2 but partly broken out to show the internal construction thereof. Fig. i is-a front elevation of the type rack showing the position of themechanical imprescharacters of reference on the drawingathe' numeral 1 designates the stand or frame of the, device which of course can be of anysuitable desired structure and suitably disposed therein .by means of supportingbrackets 2 or otherwise is the platen 3' mounted adjacent the" type bars 10 and adapted to be provided in practice. with suitable operating mechanism has not shown for the reason that I do not make any claim in this application to that struc- It might be well to note also at this time that the device will beprovided with a suitable carriage, escapement and all other necessary mechanism to provide successful operation, but these several mechanisms will be made the subject matter of specific applications for patent hence I do not here show, describe or claim any of them,'this application being. confined solely to the mechanism'whereby the mechanical impression is derived.

My improved mechanical impression mechanism involves a single driving or tap Patented Oct. 27, 1914". Application filed March 2 6, 1914. Serial No. 827,279.

Fig. 9 is a side ping hammer which a ctuates thetyping bar, there being but the single driving or tapping hammer which operates all of the type are and hence ltbecomes necessary to provide. amechanism fdr bringing each individual type bar into alinement with such driving.- or tapping hammer in order'that the impression of the type may'always be made at the same point with. respect to the 1%] complete structure of the machine so as to place the-type in successive almement on the paper or other material. -To this end i. thenmy mechanism embodies in its comp'lete operation two structures, namely, the 5 type carriage and the mechanism for operatmg thesameto ahn'e individual type bars with the'driving or tapping hammer and the second, the mechanical impression mechanism whereby the tapping hammer is operated to cause the'type bar to move to bring the type into contact with the paper or other material. I will therefore describe these two mechanisms separately and describe first, the type carriage and operating mechanism: This structure embodies first a quadrant hape asat 6, many suitable frame andprovided with a quadrant-shaped counter weighted -'*ty'pes mayfbe brought into position,

fra1r1e7fflhclon' the pivotal point 6, which cnu'nter weighted mechanism acts to help a eieitype carriage '5 in normal verti "11 position; Within the carriage frame 5 'i's' 'is i miicircular shaft 8 on which are pivotallyi'mount'ed, as at 9, individual type bars 10.5 The upper end of each of the type bars 1Q'projec'ts through a guide slot 11 in the outer; periphery of' the frame and is pro- -vicled at its, extreme upper end with the type 1'2. In thejidr'awings shown herewith,

Ishow three ofthese type 12, one for the srli all letters, one for the capital letters and oneffo'r other indicating data, which three in pr 'er alinement by means of shiftingthe carr age 511p or'd'own', but this actionv is a' separate and independent invention which is nothieshown orv claimed. v

The vertical center line of the normal position of the carriage 5 will be the point at' which the impression will be taken from the type and therefore it is necessary that such carriage 5 be capable of being swung froniside to side in order to bring the sever al individual type bars into proper alinement with said center line in order to be actuated by the tapping or driving hammer which strikes the type bar and brings the type in contact with the paper or other material (new platen and this mechanism comprises first the share 6 which is suitably journaled. adjacent the member 5 in a frame 13 or any other suitable member, which shaft Uprojects to a point" near the front of the typewriting machine where it is again journah-zd in any suitable manner, as

carriage frame '5 pivoted;

.wear. '30 and 31 provided with set "screws'30 at l 1. Secured to the said shaft d, at any suitable point, is a projecting arm 15 connected by a toggle joint 16 with a down Wardly projectinglink 17 yoked as at 18 over a rod 19 journaled at each end insan arm 20,

such arms20 being turn-ably mounted on a shaft 21 and each bemg provided'with an obliquely projecting arm 22 carrying in their outer ends another rod. 23 disposed parallel with the rod 19 and in the same vertical plane therewith' i .1

Disposed approximately midway be-' tween the rods 19 and 23 is a shaft 24: suitably journaled at its ends, as at 25. Secured on theshaft 24 is acam 26 curved at its upper end and normally engaging the rod 19 when the machine is in inactive position for the purpose of fixingthe'nor'mal true position of the arms 20' and 22 and therods 19 and 23 carried thereby;

7 F or each key of the typewriter I provide a -cam 27 secured to theshaft 24, eachof said cams having two oppositelydispos'ed curved surfaces 28' and 29 respectively, capable of being brought into engagement with cams and 31 respectively, secured to the rods 19 and 23 for the purpose of taking up This adjustment consists of collars and 31 whereby said cams 30 and 31 are ca pable of being adjustably set on said rods1 9 and 28. There is one cam 27 for each'operating key on the machine and thecur'va tures of the surfaces 28 and 29 are variedlso I that with the movement of the earns 27 with the shaft 24, the surfaces28 engaging their dentally the arm 15 to turn the shaft 6. The

movement of said shaft 6 swings the type carriage to such a vpoint as will bring the type bar 10 corresponding to the key which has been operated into'the center alinement for being operated by the impression mechanism. a x

The cams 17 receive their movement from the keys 32 by means of the following structure namely: On each cam 27 IS a set of gears which in turn mesh with a set ofv gears 34 on a bar 35, which bar has an eye turnably mounted'on the shaft 21 said ,eye 36 having a slotted portion 37, the bottom of suchslotted portion normally ena key 38 set into the shaft 21 where by with the movement of the said rod the shaft 21 will likewiseb'e moved. The reathe several bars 35.

larly secured to the shaft 24 (see Fig. 9).

the movement of one will affect the shaft 21, the others remaining idle in the mean time, this being permitted of by reason of the keys 38, moving through the slots 37 in The cams 27 are simi- The eye36 is provided with another branch ing bar 39 which is the key bar which is suitably bent into any desired shape to properly position the key 32. downwardly from the bar 35 is a small arm 40 and projecting downwardly from the bar I 39 is a small arm 41.

Projecting @n the bottom of the member 40 is a contact plate 42 having a projecting finger member 43.

On the bottom of themember 41 is a contact plate 44 while designates a wine connected with the member 41 and running through a source of electricalenergy 46 and back to connection with an electromagnet 47 pcsitioned lmmediately below the member and having a' projecting spring contact member 48 positioned immediately below the member 41. -VVhen the key 32 is pressed, this-moves the bar 39 and incidentally the bar 35 downwardly moving the shaft 21 in the manner described, which movement of the shaft 21 will operate certain other mechanism to be hereinafter described.

With reference to the particular structurenow being referred'to, namely, the type carriage 5, the movement of the members 39 and 35 brings the contact plate 40 into engagement with the plate 48 thus electrifying the magnet 47 which then attracts the plate 42,- the balance of the movement of the bars 39 and 35 being then continued by means of this electromagnetic attraction which continues until the finger member 4-3 engages the spring contact member 48 breaking this connection with the member 44 and allowing the electromagnet to become dead, when a spring' 49' moves the parts back to position,

this spring 49 hearing against a projecting lever 50 on the shaft 21, which lever likewise performs other functions to be hereinafter described. 1th the downward movement of the bar 35 the gear 34 engages the gear 33 moving the cam 27 into engagement, as described, with the bars 19 and 23 simultaneously moving the cam 26 out of engagement with such bar 19. This movement of the namely: On the lever 50 is a projecting spring finger member 51 having a spring 52 holding the same in normal contact with a lug one dog 54. This dog 54 is provided with a pair of branches 55 pivotally mounted, as at 56, to the lower end of the driving or tapping hammer 57 which is provided vith a head 58 disposed at the normal center line of the carriage 5 to be alined with which everyone of the type bars is to be swung to said center line with the operation of the said carriage as above described. The lower end of the member 57 is provided with a pair of branches 59 in which is pivotally swung a catch 60 having a rearwardly projecting finger member '61, which finger member 61 is movable in aslot 62 of a slotted guide 68 and adapted to strike on an adjustable stop member 64 on said guide 63 to limit the movement of the catch 60 for a purpose as will presentlyappear. The said guide member 64 also is provided with an upper stop end 65 against which the lower end of the member 57 rests when in normal inactive position, such member 57 being pivotally mounted by means of the pins 56 in supporting brackets 66. Mounted in a bracket 67 beneath the bracket 66 is a coiled spring 68 which is secured-to the bottom of i the dog 54.

In practice, when the shaft is moved by means of the mechanism heretofore described, this causes the lever 50 to describe an arc upwardly which carries the member 51 also upwardly. The movement of the saidmer'nber 51 engaging with the notch 53 moves the dog 54 on its pivotal connection 56 and tends to contract or wind up the spring 68. This movement continues until a notch 69 on the catch 60 engages a shoulder 70 on the dog 54. The movement then continues until a small lug 71 on the dog 54 comes into contact with the member 51 by reason of the arc movement imparted to such dog 54. When thiscontact of the members 71 and 51 occurs, the member 51 is thrown out ofengagement with the notch 53 and the expansion or unwinding of the spring 60 then gives the dog 54 a sudden jerk backwardly. This backward movement of said member 54 then is likewise imparted to the member 60 by reason of the engagement of the portions 69 and 70, this engagement being maintained by a small spring 72. By reason of this engagement and also by reason of the fact that the member 60 is pivotally mounted on the end of the member 57, the entire movement actuated by the spring 68 will be imparted to the member 57 giving such member a quick sudden movement to drive the portion 58 into engagement with the type bar 10, thus throwing such type bar forward to bring the type 12 into engagement with the platen 3. The instant the member 58 strikes the engagement with the stop member 65.

When the above operation is completed, the spring 49 acting against the lever 50 moves the shaft 21 back to normal position which, through the medium of the connections described, returns the type carriage and all the co-ac'tingparts back to normal inactive position. The type bar throws back to normal position in the type carriage 5 by means of the rebound given to the same with its impact against the rubber platen 3.

From the foregoing description it will be readily seen that I have produced such a .device as substantially fulfils the objects of the invention as set forth herein.

l/Vhile this specification sets forth in detail the present and preferred construction of the device, still in practice, such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is l. A mechanism of the character described comprising a type carriage, type bars movable therein, a turnable shaft fixed to said type carriage, a projecting arm on said vshaft, a rod, a link flexibly connected with said arm )fil'ld said rod, a key mecha nism, and means operatively connected between said key mechanism and said rod, whereby with the operation of said key mechanism said rodwill be lifted to cause said link to operate said arm to turn said shaft, as described. a

2. A device of the character described '1 comprising the combination of a type carriage carrying type bars, a hammer mecha .nism for operating individual type bars, means foroperating said carriage to bring said individual type bars into alinement with said operating mechanism, said last named. means comprising a shaft fixed to said carriage, a projecting arm on said shaft, a rod, a link flexibly connected with said arm and with said rod, another shaft, a plurality of curved cams on said shaft engageable with said rod, a key mechanism, and means operatively connected between said key mechanism and said last named shaft whereby with the operation of said key mechanism said last named shaft will be turned to bring said cams into engagement with said rod, as described. a

3. A device of the character described comprising the combination of a type carriage carrying type bars, a hammer mechanism for operating individual type bars, means for operating said carriage to bring said individual type bars into alinement with said operating mechanism, said last named mean comprising a shaft fixed to said carriage, a projecting arm on said shaft, a rod, a link flexibly connected with said arm and with said rod, anothershaft, a plurality of curved cams on said shaft engageable with said rod, a key mechanism, means operatively connected between said key mechanism and said last named shaft whereby with the operation of said key mechanism said last named shaft will be turned to bring said cams into engagement with said rod, and means operable between said key mechanism and said type bar operating mechanism whereby with the movement of said hey mechanism said type bar mechanism will likewise be operated, as de scribed.

' 4. A mechanism of the character described comprising type bars, a hammer mechanism for operating individual. type bars, such hammer mechanismcompnsing a hammer pivotally mounted, a catch pivotally mounted in the lower end of said hammer, a dog pivotally mounted independently of said catch and pro- ,vided with a spring, means for moving said dog to tension said spring and engage. said catch, and means forreleasing said moving means from said dog to allow said spring to expand, as described.

Iii-testimony whereof I affix my signature in presence of two witnesses.

GRIN BENNETT. W'itnesses PERCY S. WEBSTER, FLOYD M. BLANGHARD. 

